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八年级数学：若(x-2)x²-4=1，怎么求x的值？要分哪3种情况讨论？
八年级数学：若(x-2)x²-4=1，怎么求x的值？要分哪3种情况讨论？
八年级数学：分式的定义和化简，解分式方程，应用题，培优专题48/333
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